Pedestal for chairs



(NoModel.)

1 D. 1101111111011. BBDESTAL'PO'R CHAIRS.

No. 283,131. Patented Aug. 14, 18813.

N4 PETERS. Plum-ummm washington. D. c.

` UNITED STATES PATENTA OEEICE.TI c

,DANIEL MQKINNoiLoF LovELL, MAssAonUsEfrTs.

'PEDESTAL FOR CHAIRS.

SPECIFICATIQN forming part of Letters Patent NO. 283,131, dated August 14, 1883.`

` Application filed November 6, 1882. (No model.)

f To all whom it may concern: A

Be it known that I, DANIEL MoKINNoN, a

` subject of Victoria, Queen ofthe United Kingdom of Great Britain and Ireland, and a resident of Lowell, in the county of Middlesex and Commonwealthl of Massachusetts, have invented a certain new and useful Improvement in Bedestals for Chairs, Tables, and Similar Articles, of which the following is a specification. i t, t

My invention relates to means of adjusting the height' of such pedestalsand to means of holding the parts from being accidentally disconnected.` c

In the accompanying drawings, Figure 1 is an oblique view of such a pedestal supporting `a chair. Figs. 2, 3, and 4 arevertical sections 'l through thepedestals proper andthe base, on

the lines a Z1, c d, and ef, respectively, in Fig. 5, Fig. '5 being a plan lof the pedestal proper. Fig. 6 is a plan of the 4pedestal and cap, the

'slots being indicated by dotted rectangles, and two dotted circles indicating differentpositions of the cap, caused by inserting the wedgeshaped stem of the cap in the outer slots., Fig.

7 is avertical cross-section of the pedestal andv other parts of my invention, showing the collar attached to the cap and two ways of swivel- Fig. 8

angles to the slots.

A is the pedestal proper, and B the base,

- these parts being cast of metal, either in one turn on said base.

piece, as shown in Figs r2, 3, andfl, or in sepa` rate pieces, as shown in Fig. 7, which repre-` sentsthese parts swveled together to allow the chair or other thing secured to the cap to be turned in different directions, the pedestal A being provided with a projection, D, which runs down through a hole in the top of the v base B, through a washer, C, and into a nut,

D', which prevents thefpedestal from being lifted off the base, but allows the pedestal to Thebase, when ofthe form shown, is secured by screws to the floor; but

Y thepedestal may be provided with legs in any well-known manner, instead of being secured to the floor. The pedestal is provided with two or more (three are shown inthe drawings) vertical wedge-shaped slots, S. These slots S have each two opposite parallel sides, as shown in Fig. 8, and no two of said slots enter the pedestal to the same depth. The inclined sides of each slotform the, same angle with each other as the corresponding sides of any other slot S.

vThe cap F` (to which the chair or other thing is secured by screws in the usual manner) has on its under side a wedge-shaped stem, I,

which ts any one of the slots S, and, as the slots are of different depths, the chair may be heldat dift'erentheights by changing the wedge or stem I from one slot to another, as is inestal) has a single hole,K, so placed that a pin, l?, maybe run through a hole in each of these parts and tie them together, as shown in estal, and the other part (preferably the ped- Fig. 8. This pin l? may have two or three threads of a screw, P', cut on it, so that it can be vturned into place with sufiicient force to prevent its being easily removed by children in school.

Vthis kind, when provided with legs not `at` The pin P also enables a chair of' tached to the iloor,` to be wholly lifted. by the back or arms of the chair.

If the chair is to be used as a school-chair, se-V cured to the floor in theusual manner, no'swivel would be required, and, if v the chair is to be used as an ofcachair, a better arrangement for swiveling than the one above described is shown in the upper part of Fig. 7. In this case the cap .F is provided, at the top thereof, with an annular ridge, F2, and al plate, G, has a cylindrical downward projection, which enters and ts loosely said ridge.V 'v This `plate is adapted to be screwed to the bottom of the chair inthe usual manner, and is AVheld down by a stud, N, which is driven into the top of thecap F, and' by a nut, N', which-screws onto thetop of said stud. ilhe top of the plate G has a central depression, which allows the nutN to lie below the top of said plate.

vided with the Wedge-shaped stem as and for the purpose specified.

2. The pedestal A, providedwith the Wedgeshaped slots S, of different sizes and depths, and the hole K, and the eap F, provided with the Wedge-shaped stem I, having holes K', in Combination with the pin P, as and for the purpose speeied.

DANIEL MCKINNON- Witnesses ALBERT M. Moonn, Josnrn A. CoRAM. 

